Door-equalizer.



No. 657,0l7. Patented Aug. 28, I900.

F. W. TOBEY.

V DOOR EHUALIZER.

(Application filed May 23, 1900.)

(No Model.)

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NIIED STATES PATENT OFFIcE.

FRED \V. TOBEY, OF CINCINNATI, OHIO, ASSIGNOR TO THE GLOBE- WVERNICKE COMPANY, OF SAME PLACE.

DOOR-EQUALIZER.

SPECIFICATION forming part of Letters Patent No. 657,017, dated August 28, 1900.

Application filed May 23,1900- To all whom, it may concern.-

Be it known that I, FRED W. TOBEY, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented new and useful Im provements in Dooi'Fqualizers, of which the following is a specification.

, This invention relates to a new and useful door-equalizer; and the invention consists in combining with the case, or section of the bookcase, the door adapted to slide horizontally into the top of the section and to be drawn out and dropped down so as to cover the opening, and in the combination and arrangement of parts hereinafter described and claimed.

The objects of my invention are, first, to furnish an equalizing device which will cause the door to be moved evenly into the case when raised into a horizontal position, also to produce a cheap and efficient door-equalizer which cannot become impaired by use. These objects are accomplished by means of the mechanism illustrated in the accompanying drawings, in which- Figure 1 shows an end View of one section of a bookcase with the outer end of the case removed, illustrating the position of the sliding door when closed. Fig. 2 shows a front elevation with the door opened and shoved back into the top of the section. Fig. 3 shows a transverse sectional view of one section of the case with the door opened and slid back into the top of the section. Fig. 4 shows also a like sectional View as Fig. 3, but with the door closed; and Fig. 5 shows a front elevation of the case-section with the door closed, a portion of the door having been cut away in order to show the position of the equalizing rod or shaft.

In Figs. 3, 4, and 5 I have shown my pre ferred form. In Figs. 1 and 2 I have shown a modified form.

A represents a section of the bookcase.

B represents the sliding door.

E represents a protecting-rod.

In Figs. 1 and 2, C and C represent antifriction-rollers which support the door when raised to the horizontal position as the same moves into and out of the case. D represents Serial No. 17,776. (No model.)

a shaft which supports the antifriction-rollers C and C, the antifriction-rollers being rigidly attached to the said shaft and said shaft being provided with journals, one in each end of the case-section, the position of the journals being shown in dotted lines in Fig. 2.

Referring now to Figs. 3, 4:, and 5, G represents a rack,of metal or other material, sunk into the face of the door, there being one rack at each end of the door. F and F represent pinions provided with cogs, which cogs are adapted to engage with the cogs of the rack G. H is a shaft upon which said pinions F and F are mounted. The shaft H is provided with journals, one at each end, which turn in openings in the ends of the section A. The position of these journals is shown in Fig. 5 by dotted lines. The pinions are rigidly secured to the shaft H. When the door is raised to the perpendicular position it rests upon the pinions, and as the door is slid into or drawn out of the section A the pinions and shaft II are revolved. It will be understood that the racks G each have the same number of cogs and are exact duplicates of each other, and that the pinions F are exact duplicates of each other.

The only substantial difference between the device shown in Figs. 1 and 2 and the device shown in Figs. 3, 4, and 5 is in the substitution of the pinions for the antifriction-rollers and the substitution of the rack to engage with the pinions.

When the door is drawn outwardly until its further movement is stopped by the contact of the shaft with the rods E, then the door turns downwardly, covering the front opening of the section. The shaft forms the pivot or hinge upon which the door turns in its opening and closing.

Having thus described my invention, What I claim to have invented, and desire to secure by Letters Patent, is-

1. In combination with a bookcase-section, or like article of furniture, a door adapted to be raised to a horizontal position and moved into said case or section, a shaft journaled in said case and carrying rotary bearings adapted to facilitate the sliding or moving of the door in its horizontal position, and rods,

one at each end of the door, adapted to limit, or serve as stops for the outward movement of the door, substantially as specified.

2. In combination with a case or section a shaft supported therein, a pinion at each end of the said shaft, rigid therewith, a door provided with a rack at either end adapted to engage with said pinions as the door is moved out of or into the case, and rods, one at each end of the door, adapted to limit, or serve as stops for, the outward movement of said door, substantially as described.

3. In combination with a case or section a shaft supported thereon, pinions F, F, secured to the shaft, one at either end, a door, a rack G at either end of the door and secured thereto, a rod E at either end of the door, all constructed substantially as and for the purpose described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

FRED W. TOBEY. Witnesses:

LoUIs B. SAWYER, TILLIE CHRISTOPHER. 

